Mistaken Identities, by John O’Sullivan.
It is held to be morally wrong to assert that someone who is a man biologically but a woman by choice and surgery is not genuinely female.
At the same time as sexual identity was becoming a voluntary matter, however, sexual orientation was being decreed to be a hard-and-fast certainty that brooks no alteration. Again, it is a secular sin to argue that someone who is gay might be able to change his sexual orientation to a heterosexual one by either religious commitment or psychiatric treatment. Indeed, so-called “reparative therapy” that promises to do just that is now outlawed in some jurisdictions — generally the same jurisdictions that encourage and even finance sex-change operations.
Desire is fixed, it seems, but not the object of desire.